| /******************************************************************************* |
| * Copyright (c) 2006, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.viewers; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.Image; |
| |
| /** |
| * The WrappedViewerLabelProvider is a label provider that allows |
| * {@link ILabelProvider}, {@link IColorProvider} and {@link IFontProvider} to |
| * be mapped to a ColumnLabelProvider. |
| * |
| * @since 3.3 |
| * |
| */ |
| class WrappedViewerLabelProvider extends ColumnLabelProvider { |
| |
| private static ILabelProvider defaultLabelProvider = new LabelProvider(); |
| |
| private ILabelProvider labelProvider = defaultLabelProvider; |
| |
| private IColorProvider colorProvider; |
| |
| private IFontProvider fontProvider; |
| |
| private IViewerLabelProvider viewerLabelProvider; |
| |
| private ITreePathLabelProvider treePathLabelProvider; |
| |
| /** |
| * Create a new instance of the receiver based on labelProvider. |
| * |
| * @param labelProvider |
| */ |
| public WrappedViewerLabelProvider(IBaseLabelProvider labelProvider) { |
| super(); |
| setProviders(labelProvider); |
| } |
| |
| /** |
| * Set the any providers for the receiver that can be adapted from provider. |
| * |
| * @param provider |
| * {@link Object} |
| */ |
| public void setProviders(Object provider) { |
| if (provider instanceof ITreePathLabelProvider) |
| treePathLabelProvider = ((ITreePathLabelProvider) provider); |
| |
| if (provider instanceof IViewerLabelProvider) |
| viewerLabelProvider = ((IViewerLabelProvider) provider); |
| |
| if (provider instanceof ILabelProvider) |
| labelProvider = ((ILabelProvider) provider); |
| |
| if (provider instanceof IColorProvider) |
| colorProvider = (IColorProvider) provider; |
| |
| if (provider instanceof IFontProvider) |
| fontProvider = (IFontProvider) provider; |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IFontProvider#getFont(java.lang.Object) |
| */ |
| public Font getFont(Object element) { |
| if (fontProvider == null) { |
| return null; |
| } |
| |
| return fontProvider.getFont(element); |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IColorProvider#getBackground(java.lang.Object) |
| */ |
| public Color getBackground(Object element) { |
| if (colorProvider == null) { |
| return null; |
| } |
| |
| return colorProvider.getBackground(element); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object) |
| */ |
| public String getText(Object element) { |
| return getLabelProvider().getText(element); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object) |
| */ |
| public Image getImage(Object element) { |
| return getLabelProvider().getImage(element); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object) |
| */ |
| public Color getForeground(Object element) { |
| if (colorProvider == null) { |
| return null; |
| } |
| |
| return colorProvider.getForeground(element); |
| } |
| |
| /** |
| * Get the label provider |
| * |
| * @return {@link ILabelProvider} |
| */ |
| ILabelProvider getLabelProvider() { |
| return labelProvider; |
| } |
| |
| /** |
| * Get the color provider |
| * |
| * @return {@link IColorProvider} |
| */ |
| IColorProvider getColorProvider() { |
| return colorProvider; |
| } |
| |
| /** |
| * Get the font provider |
| * |
| * @return {@link IFontProvider}. |
| */ |
| IFontProvider getFontProvider() { |
| return fontProvider; |
| } |
| |
| public void update(ViewerCell cell) { |
| Object element = cell.getElement(); |
| if(viewerLabelProvider == null && treePathLabelProvider == null){ |
| // inlined super implementation with performance optimizations |
| cell.setText(getText(element)); |
| Image image = getImage(element); |
| cell.setImage(image); |
| if (colorProvider != null) { |
| cell.setBackground(getBackground(element)); |
| cell.setForeground(getForeground(element)); |
| } |
| if (fontProvider != null) { |
| cell.setFont(getFont(element)); |
| } |
| return; |
| } |
| |
| ViewerLabel label = new ViewerLabel(cell.getText(), cell.getImage()); |
| |
| if (treePathLabelProvider != null) { |
| TreePath treePath = cell.getViewerRow().getTreePath(); |
| |
| Assert.isNotNull(treePath); |
| treePathLabelProvider.updateLabel(label, treePath); |
| } else if (viewerLabelProvider != null) { |
| viewerLabelProvider.updateLabel(label, element); |
| } |
| if (!label.hasNewForeground() && colorProvider != null) |
| label.setForeground(getForeground(element)); |
| |
| if (!label.hasNewBackground() && colorProvider != null) |
| label.setBackground(getBackground(element)); |
| |
| if (!label.hasNewFont() && fontProvider != null) |
| label.setFont(getFont(element)); |
| |
| applyViewerLabel(cell, label); |
| } |
| |
| private void applyViewerLabel(ViewerCell cell, ViewerLabel label) { |
| if (label.hasNewText()) { |
| cell.setText(label.getText()); |
| } |
| if (label.hasNewImage()) { |
| cell.setImage(label.getImage()); |
| } |
| if (colorProvider!= null || label.hasNewBackground()) { |
| cell.setBackground(label.getBackground()); |
| } |
| if (colorProvider!= null || label.hasNewForeground()) { |
| cell.setForeground(label.getForeground()); |
| } |
| if (fontProvider!= null || label.hasNewFont()) { |
| cell.setFont(label.getFont()); |
| } |
| } |
| } |